Update: Carbon Dioxide Concentration
December 2019's global average concentration of atmospheric carbon dioxide (CO₂) was about 412 parts per million (ppm), up roughly 24 ppm from December 2009.

Update: Global Surface Temperature
Keeping an eye on climate? We have updated our "vital sign" dashboard with the latest global temperature data.

Video: Global Transport of Australian Bushfire Smoke
Smoke from the Australian bushfires is making its way around the world, interacting with global weather and distributing aerosols—ultraviolet-absorbing particles in the air—along the way.

Images of Change: Drought Shrinks Southern Africa's Lake Kariba
As of December 2019, Lake Kariba, the world's largest reservoir by volume, was at 10 to 20 percent of capacity.

Images of Change: Shanghai, China, Adds Land
China's Shanghai metropolitan area has expanded into the East China Sea through land-reclamation techniques, adding well over 220 square miles (570 square kilometers).

In Case You Missed It: Climate Change in Spanish (cambio climático en español)
Our background articles and animated videos about climate change are now available in Spanish. (Nuestros artículos de fondo y videos animados sobre el cambio climático ahora están disponibles en español.)

NASA's Global Climate Change website is produced by the Earth Science Communications Team at NASA's Jet Propulsion Laboratory/Caltech. To learn more, visit our website at

› climate.nasa.gov